Transfer-table for rolling-mills



H. G. OBRIEN.

TRANSFER TABLE FOR ROLLING WHLLS.

APPLICATiON FILED .IULY30, I919.

13352 345, Patented Dec. 14, 1920.,

4 SHEETSSHEET 1- WIITNESSES mvlsmzm aggww.

H. G. OBRIEN.

TRANSFER, TABLE FOR ROLLING MILLS.

APPLICATION FILED JULY30, I919.

1,362,345, Patented Dec. 14, 192%.,

4 SHEETS-SHEET 2.

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FEE.2-

iliiiiill WITNESSES lNVENTOR H. e. OBRIEN.

TRANSFER TABLE FOR ROLLING MILLS.

APPLICATION FILED IULY 30.1919.

1,36%345, Patented Dec. 14, 1920.

4 SHEETS-SHEET 3.

H. G. OBRIEN.

TRANSFER TABLE FOR ROLLING MILLS.

APPLICATION FILED JULY30, I9I9.

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UNITED STATES HENRY G. O'BRIEN,

PATENT, OFFICE.

OF WARREN, OHIO.

TRANSFER-TABLE FOR ROLLIIG-MTLLS.

Specification of Letters Patent.

Application filed July 30, 1919. Serial- HO. 314,276.

To all whom it may concern:

Be it known that l, HENRY G. OBRIEN, residing at Warren, in the county of Trumbull and State of Ohio, a citizen of the United States, have invented or discovered certain new and useful Improvements in Transfer-Tables for Rolling-Mills, of which application, but the fact of wider appli-- cability will be apparent to one who reads through this specification.

' In the accompanying drawings Figure 1 shows in plan the cooling-table of a strip mill in which my invention is embodied; Fig. 2 is a fragmentary view in vertical section and to larger scale, onthe plane indicated by the line IIII, Fig. 1; Fig. 3 is a second such view, on the plane indicated at IIIIII, Fig. 1; Fig. 4 is a view in plan and to still larger scale showing one of the grids detached, which in Fig. 1 are shown assembled; Fig. 5 shows the grid in vertical section, on the plane indicated at V--V, Fig. 4; Fig. 6 is a view in vertical section and tosubstantially the same scale with igs. 2 and 3), on the lane indicated by the igs. 7 and are views in side elevation and in plan, and to larger scale of a detail termed the push on and Figs. 9 and 10 similarly illustrate a-cooperating detail, termed the pull over. Fig. 11 is a fragmentary view in side elevation of the pull over and illustrating a refinement in structure.

Referring first to Fig. 1, the'table-top will be seen to be flanked by two runways, 1 and 2, composed each of a succession of positively driven rolls, and to consist of a suecession of series, 3, 4, and 5, of ids, arranged between the runways. oth runways carry the material in the direction in-' dicated by the arrow a and the transfer mechanism presently to be described carries the material across the table, downwardly, as shown in Fi 1, that is to say from runway 1, over grids 3, 4, 5, in the succession enumerated, to runway 2. Opposite the end of runway 1, as shown in Fig.1, stands a reel 6, and o posite the end of runway 2 (which exten s in the direction of travel a considerable distance beyond runway 1 and beyond the table) stands a shear 7 This is a convenient arrangement; and, although in these respects my invention is not circumscribed nor limited, explanation should be made of these features: The newly rolled material, strip, rod, or of othershape, comes hot from the rolling mill, advancmg upon runway 1. If desired, this material may ad'- vance directly to the reel 6 and be there coiled and thence carried away. In that case the cooling table does not come into play. But if'strip material, for exam is, is to be produced in quantity and in speci ed lengths, the strip coming hot from the mill passes along runway 1 till it comes opposite the cooling table. The driving rolls of therunway are then stopped and the length of material comes to rest. It is then transferred laterally, by ap aratus presently to be described, to the coo ing table. It lies on the cooling table until it is brought more nearly to atmospheric tem erature, and at length comes to runway 2: en the length of strip material has been carried to runway 2 and rests upon the .rolls which form that runway, the rolls are set in rotation,

and the strip is carried along to theshears. It is there out into the lengths desired, and since when out it is at relatively low temperature, allowance for thermal contraction may be kept within narrower limits, and the waste incident to ultimate trimming may be Patented Dec. 14, 1920.

less, or further trimming may be rendered unnecessary.

The number of series of grids is not a vital matter; I have shown three series, but it will be understood that I might have shown any other number. The individual grids are, as actually built, 33 inches wide,-

ut this is a matter of structural convenience. It is convenient to arrange the transfer mechanism in part at least 1n spaces between adjacent grids, and the interval of 33- inches is a proper interval. between successive fingers to bear upon the material and to drive it transversely across the table. This interval of course is not invariable.

There are conveniently two series of transfer mechanisms, termed the push ofi and the pull over; the first carries the material from runway 1, the other delivers it to;

runway 2, and the two mechanisms in their range of movement overlap, after the manstood in the sequel there might be a single series, or three series or more.

Referring to Figs. 6, 7-, and 8, the push 01f consists of a series of slides 8, each armed with a dog 18 presently to be described, and reciprocatory between adjacent grids of series 3 (of. Fig. 1) and, referring to Figs. 6, 9, and 10, the pull over consists of a series of slides 9, armed each with a series of dogs 19 and reciprocatory between adjacent grids of series 5. Referring to Figs. 1 and 2 it .will appear that the grids of series 5 are not alined with those of series 3 and 4, but are arranged in staggered relation thereto; the push ofi reciprocates in slideways 10 formed by and between the individual grids of series 3, and slideways '11 for the pull over are similarly formed between the grids of series 5; and, further to provide for extended traverse of slides 9, the individual grids of series 3 and 4 are provided with channels 12 which, when the grids are assembled, are alined with and form continuations of the slide-ways 11. This is shown in Fig. 1. Fig. 4 shows in plan a single grid of series 3, and Fig. 5 is a vertical section along the mid-line of the channel 12 (cf. Figs. 2 and 3).

The slides of the two series are caused to reciprocate in their several slide-Ways by means of racks formed on their under sides, and pinions 13 and 1 1 engaging each a slide of one of the two series. For each series of slides there is a series of pinions, driven conveniently from common powershafts a shaft for each series-and each powershaft is driven by a separate motor. Fig. 2 shows in elevation the ower-shaft 15 for driving the pinions 13 or the push off, and a motor 16 is shown driving shaft 15. A clutch 17 indicates that shaft 15 may be made in section, to the end that a longer or shorter series of push off slides may be operated, according to the conditions of work.

The slides 8 carry each a single dog 18, pivoted to swing to alternate positions shown in full and in dotted lines in Fig. 7 This dog 18 is provided with means (the details of which form no part of my present invention) which effect its turning at proper times and to proper degree: when the slide advances in the direct-ion indicated by the arrow (1, the dog is by such means brought to full-line position, ready'to engage 'upon its vertical face a strip of material resting on runway 1 and to carry it to the tabletop, and when the slide 8 recedes, the dog is brought to. the dotted-line position and passes beneath any material which may then messes be resting on runway Comparing Figs.

6 and 1, it will be seen that the slide 8 has a range of movement across theseries 3 of grids, and the dog moves from a position on the farther side of runway 1 (the righthand side, Fig. 6; the upper side, Fig. 1) across the runway and across the table-top from its margin toward the middle. Of course it will be understood that the extent of traverse of the dogs 18 across the tabletop may be greater or less, as may be desired, but it is requisite that the dogs 18 in their range overlap the ranges of dogs of the pull over, presently to be described.

The slides 9, movable in slide-ways 11 and channels 12, are equipped each with a series of dogs 19. These slides are reciprocatory by the rack and pinion mechanism already described. The dogs 19 are spaced at intervals throughout the extent of each slide and the interval between successiye dogs is less than the range of permissible movement of the slide. The position of the end dog (nearest the runway 2) is such that at one end of its range of movement it will carry a piece of material until it rests on the runway.

The dogs 19 are pivoted in the slides 9; they present forward vertically disposed faces and rearward inclined faces; rotation clockwise (cf. Fig. 9) is suitably prevented; they are so weighted that when free to rotate they stand in the position shown in Fig. 9; when the slides 9 are retracted work lying on the table to rearward of a dog 19, engaging the dog upon its inclined face, turns it so that it passes beneath the work; when free again, the dog resumes its normal position by gravity.

Referring to Fig. '6 it will be observed that, whereas the table-top and the runway 2 are at a common level, the level of runway 1 is somewhat higher; the dogs 18 stand correspondingly higher than the dogs 19;

and it will further be observed (cf. Fig. 5)

that the grids of series 3 (which are arranged next runway 1). are provided along their edge adjacent the runway 1 with a step 21. Over this step the material fallsas it is pushed by dogs 18 from runway 1.

The grids of series 3 may be provided in their recesses with rungs 23, these may be set at intervals, for a distance of say 20 inches from step 21. Their function will presently be explained.

One further structural feature remains to be explained; it is shown in Fig. 11. The

slides 9, or some of them, may advantageously be formed as compound members; bars 91 which carry the dogs being mounted in frames 92 which carry the racks. and these two slide parts may be made longitudinally adjustable, by the screw-thread ad'ustment indicated at 22, or its equivalent. t will be understood that by such provision the dogs of adjacent slides 9 may be brought into exact alinernent longitudinally of the table.

The operation will readily be understood. Material that is to be reeled passes down runway l to reel 6, without bringing into play the mechanism in which this invention vush over and do s 18 en a in the b 7 h b D material at intervals, push it transversely from the runway, over step; 21, until it rests on grids 3 of the table top. Attendants may then, should the length of material lie obliquely on the grids, by means of crowbars thrust through the grids and finding purchase against the rungs -23, true the material against the face of step 21. The dogs 19 pick the material up where the dogs 18 have left it, or, perhaps, where it lies, trued up against step 21.

The dogs 19 take the material and pull it step by step acros the table, at such speed as the operator may determine, to afford the necessary coolin and to'take care of the output of the mil The range of movement of the slides 9 being greater than the interval between the dogs 19, proper movement of the slides will cause the successive dogs to pick the material u and push it along, until at last it is dellvered to runway 2. Furthermore, the extent of the traverse of the slides (both of slides 8 and slides 9) is under the control of the operator, by virtue of the motor drive of pinions 13, 14 which engage the racks of slides 8 and 9, and in this respect too the operation' of the'table is adaptable to the occasion. It is desirable, as has been intimated, to have the drive of the rolls of the two runways 1 and 2 also wholly within the control of the operator.

The alinement of the dogs 19 of the suc ceeding series of pull over devices has already been explained. Such alinement is a preliminary -matter, preparatory to the handling of material.

I have shown and described my invention with all the minutiae of an actual installation. It will be understood that details may be varied as desired; my invention consists in the general features of mechanical construction defined in the ensuing claims, and so long as these features are present the invention is present, regardless of details.

1 claim as m invention:

1. In a trans er table structure, the combination, with a table-top, of a plurality of slides provided each with a work-engaging dog and with a driving rack, means for operating the slides in unison transversely of the table-top such operating means including pinions engaging the racks with which the slides are provided, one of said slides including a frame carrying the rack and a'bar carrying the dog, and frame and bar bein adjustable one relative to the other, so stantially as described. I

2. In a transfer table for a rolling-mill the combination of a runway, a grid-formed table-top arranged adjacent the runway, and at a lower level than the runway, the step-down from runway to table-top affording a vertical bounding wall to the tabletop, and a rung arranged in a grid recess in said table-top, substantially as described. 3. In a transfer table for a rolling-mill the combination of a runway, a table-top adjacent the runway, a slide reciprocable transversely of the runway and provided with a dog and with means for swinging the dog to active or inactive position according as the slide reciprocates in one direction or the other, a second slide reciprocable transversely of the table, also provided with a dog, the range of movement of the dogs on the two slides overlapping, substantially. as described.

two plates first named, substantially as described.

In testimony whereof I have hereunto set my hand.

HENRY G. OBRIEN.

Witnesses JOHN W. HUGHES, LAURA M. Jones. 

